Skipping resistance workouts can lead to some noticeable changes in your body over time. A lack of this type of exercise causes your metabolism to decelerate, alongside a steady decrease in both your overall muscle mass and bone density. Fortunately, picking up some weights provides an excellent solution to these challenges. By making weightlifting a regular part of your routine, you are effectively setting yourself up to preserve a lean physique, retain your physical power, and maintain a highly active metabolic rate well into your later years.